US7947149B2 - Lamination process and roller for use therein - Google Patents

Lamination process and roller for use therein Download PDF

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Publication number
US7947149B2
US7947149B2 US12/017,180 US1718008A US7947149B2 US 7947149 B2 US7947149 B2 US 7947149B2 US 1718008 A US1718008 A US 1718008A US 7947149 B2 US7947149 B2 US 7947149B2
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United States
Prior art keywords
roller
webs
adhesive
web
thereupon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/017,180
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English (en)
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US20080179001A1 (en
Inventor
Arthur Myatt
Gregory Demaggio
Kevin Beernink
Kermit Jones
Kenneth Lord
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United Solar Ovonic LLC
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United Solar Ovonic LLC
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Filing date
Publication date
Priority to US12/017,180 priority Critical patent/US7947149B2/en
Application filed by United Solar Ovonic LLC filed Critical United Solar Ovonic LLC
Priority to AT08728132T priority patent/ATE548177T1/de
Priority to PCT/US2008/051793 priority patent/WO2008091945A1/en
Priority to EP08728132A priority patent/EP2121286B1/de
Priority to KR1020097017595A priority patent/KR20090108095A/ko
Priority to CN2008800048910A priority patent/CN101646549B/zh
Assigned to UNITED SOLAR OVONIC LLC reassignment UNITED SOLAR OVONIC LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JONES, KERMIT, BEERNINK, KEVIN, DEMAGGIO, GREGORY, LORD, KENNETH, MYATT, ARTHUR
Assigned to UNITED STATES AIR FORCE reassignment UNITED STATES AIR FORCE CONFIRMATORY LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: UNITED SOLAR OVONIC, LLC, PRIME CONTRACT CONTRACT NO.: F29601-03-2-0122
Publication of US20080179001A1 publication Critical patent/US20080179001A1/en
Application granted granted Critical
Publication of US7947149B2 publication Critical patent/US7947149B2/en
Expired - Fee Related legal-status Critical Current
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/485—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling cores or mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/245—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages by deformation of an elastic or flexible material
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
    • B29K2079/08—PI, i.e. polyimides or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/60—In a particular environment
    • B32B2309/68—Vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2379/00—Other polymers having nitrogen, with or without oxygen or carbon only, in the main chain
    • B32B2379/08—Polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S242/00—Winding, tensioning, or guiding
    • Y10S242/92—Glass strand winding

Definitions

  • This invention relates generally to lamination processes, and more specifically to processes for laminating lengthy webs of thin, flexible materials.
  • the invention relates to a particular, radially compressible roller which may be utilized in the lamination process.
  • Thin film optical and electronic devices including, but not limited to, photovoltaic devices, electrical circuits, displays, optical filters and the like, are often disposed upon thin, flexible substrates in order to decrease the device weight and/or provide a flexible device.
  • These substrates may comprise metallic sheets or polymeric bodies, and in particular instances, such polymers may comprise polyimides.
  • the thin, flexible substrate is frequently supported upon a body of carrier material, such as a sheet of metal or polymer.
  • the carrier is removed by physical and/or chemical methods.
  • a thin, polymeric substrate comprised of a polyimide is supported upon a carrier comprising a sheet of ferrous alloy such as stainless steel.
  • the stainless steel is removed by etching.
  • affix the thin, flexible substrate to the carrier member so as to provide a smooth, uniform surface for deposition of the thin film layers.
  • Such affixation is typically accomplished by lamination using a combination of heat and pressure, and optionally a hot or other thermally activated melt adhesive to bond the substrate to the carrier.
  • the lamination process may be readily implemented for relatively small area substrates; however, when large area substrates, such as relatively long webs of materials are being prepared, problems of uniformity can arise.
  • the lamination process is carried out under low pressure so as to avoid the formation of any bubbles or inclusions which could compromise the laminated surface.
  • One approach to laminating long webs of material involves rolling the webs, in an interleaved configuration, onto a cylindrical support, under tension, and then disposing the rolled material in a low-pressure environment and heating the material to cause the lamination.
  • Lamination of the substrate materials is typically carried out at fairly high temperatures and these temperatures can cause problems in the lamination process, since the high temperatures can cause deformation or other adverse effects on the roller upon which the webs are wound. Such deformation can result in unevenness, buckling, wrinkling or other defects in the laminated product.
  • rollers are provided with an elastomeric surface which can operate to maintain tension in the wound webs and thus accommodate thermal stresses; however, because of problems such as outgassing, thermal degradation or the like, such elastomeric materials cannot be utilized in high temperature ranges typically employed for laminating substrates of this type.
  • Ceramic rollers or various metal alloy rollers can tolerate high temperatures; however, thermal expansion of such rollers is nonuniform, and in general they tend to expand to a greater degree in their center (“barrel”) when heated, thereby compressing the webs in a nonuniform manner.
  • the present invention has been developed to overcome these shortcomings of the prior art and to provide a lamination process and system which is operative to uniformly laminate long webs of materials under relatively high temperature conditions so as to produce laminated materials having sufficiently high quality to allow their use as substrates for the preparation of thin film electronic and optical devices.
  • a method for laminating elongated webs of sheet material According to the method, a first elongated sheet of material and a second elongated sheet of material are rolled, in an interleaved relationship, onto a roller which has a radially displaceable outer surface. The roller, with the interleaved webs wound thereupon, is then heated and/or exposed to a low-pressure environment so as to effectuate the lamination of the webs.
  • one of the webs may have a layer of hot melt adhesive disposed on a surface thereof; in other instances, a separate layer of hot melt adhesive may be interleaved between the first and second webs. This hot melt adhesive will function to laminate the webs together.
  • the radially displaceable surface of the roller functions to keep the webs under an appropriate degree of tension during the time they are subjected to the lamination process.
  • the webs may be wound onto the roller so as to initially displace and compress the surface of the roller so as to provide a biasing force on the webs.
  • the expansion of the roller during heating will displace the roller surface thereby imposing a biasing force on the webs.
  • the webs comprise a layer of a polymeric material and a layer of a metal.
  • the method may be used to prepare laminated materials having utility as substrates for electronic devices such as photovoltaic devices.
  • the roller may comprise a plurality of leaf springs supported on an outer surface of a core member.
  • the outer surface of the core member is a cylindrical surface
  • the leaf springs may be comprised of a plurality of members each having a length dimension which is disposed so as to be aligned with a length dimension of the cylindrical core, and a width dimension which is aligned with a circumference of the cylindrical surface of the core.
  • FIG. 1 is a cross-sectional view of a laminated substrate of the type which may be prepared through the use of the present invention
  • FIG. 2 is an illustration of a first step in a process for the preparation of a body of laminated material wherein there is shown a partial cross-sectional view of a roller having webs of material wound thereonto;
  • FIG. 3 is a side elevation view of one embodiment of roller which may be used in the practice of the present invention.
  • FIG. 4 is a perspective view of the roller of FIG. 3 ;
  • FIG. 5 is an enlarged view of a portion of the roller of FIGS. 3 and 4 ;
  • FIG. 6 is a top plan view of one leaf spring member which may be utilized in the roller of FIGS. 3-5 ;
  • FIG. 7 is an end view of a portion of another embodiment of roller in accord with the present invention.
  • FIG. 8 is an end view of a portion of yet another embodiment of roller in accord with the present invention.
  • FIG. 9 is an end view of a further embodiment of a roller of the present invention having a radially displaceable outer surface.
  • the present invention is directed to a method for laminating relatively long webs of flexible material, and to a particular type of roller which may be used in the lamination process.
  • a first and a second elongated web of sheet material are wound, in an interleaved fashion, upon a roller having a radially displaceable surface so as to compress the radially displaceable surface.
  • the radially displaceable surface exerts an outward, radial, bias on the webs thus maintaining them under uniform compression.
  • the web and roller are then heated to bring about a thermal lamination process.
  • the rolled webs are subjected to a subatmospheric pressure environment before and/or during at least part of the time they are being heated.
  • radially displaceable is meant that at least some portions of the outer surface of the roller are capable of motion having a component which is directed along a radius of the roller so as to effectively change the diameter of the roller.
  • the supported substrate 10 of FIG. 1 includes a body of substrate material 12 , a support member 14 , and a body of adhesive, such as a hot melt adhesive, a thermosetting adhesive or a pressure-sensitive adhesive 16 therebetween.
  • a body of adhesive such as a hot melt adhesive, a thermosetting adhesive or a pressure-sensitive adhesive 16 therebetween.
  • the carrier 14 and/or substrate 12 may include further layers thereupon.
  • the carrier 14 may include a stress-balancing layer thereupon which layer is subsequently transferred to the substrate 12 when the carrier is removed.
  • an etch-stop layer may also be disposed on the support, and this layer will function to limit the effects of an etchant material which is subsequently used to remove the support from the substrate following lamination.
  • the substrate 12 itself may include further layers thereupon.
  • FIG. 1 shows an adhesive 16 as being used to bond the substrate 12 and carrier 14 ; however, it is to be understood that in some instances, the adhesive may be eliminated and bonding may be accomplished solely by heat and/or pressure. It should also be noted that while FIG. 1 shows the substrate 12 and carrier 14 as being approximately equal in thickness, the relative thicknesses of these two members may vary.
  • FIG. 2 there is shown a first step in a process for the lamination of a web of substrate material 12 onto a carrier 14 .
  • FIG. 2 shows a portion of a roller 18 , having a radially displaceable surface, with a web of substrate material 12 and a web of carrier material 14 being wound thereupon. As will be seen, portions of the webs of these materials have already been wound onto the roller 18 .
  • the web of substrate material 12 has a layer of an adhesive 16 disposed thereupon.
  • the adhesive 16 may be disposed upon the carrier 14 , or it may comprise a separate web. And as previously noted, in certain instances, the adhesive may be eliminated.
  • FIG. 3 there is shown an end view of a roller 18 having a radially displaceable surface.
  • FIG. 4 is a perspective view of this same roller.
  • the roller 18 includes a generally cylindrical core 20 having a plurality of leaf springs, for example spring 22 , affixed thereto, in this instance by screws 24 .
  • the leaf springs 22 are disposed about the outer surface of the cylindrical core 20 and are generally aligned with the length dimension of the surface of the cylindrical core.
  • These leaf spring members provide an outer surface for the roller which surface is, in part, displaceable in a direction corresponding generally to the radius of the roller.
  • FIG. 5 there is shown an enlarged view of a portion of the roller as it corresponds to the depiction in FIG. 3 .
  • a leaf spring member 22 is affixed to the surface of the core 20 by a screw 24 .
  • the leaf spring 22 is a generally elongated, planar member disposed tangent to the cylindrical surface of the core 20 so that the two edges of the leaf spring 22 are spaced from the surface of the roller.
  • edges of the spring 22 are generally tapered. This feature is not necessary for the practice of the present invention, but does allow for a smoother winding of a web of material thereonto. As shown in FIG. 5 , the edges on both sides of the spring 22 are tapered. This dual tapering is not necessary for smooth winding; single tapering will suffice. However by making both sides tapered, the spring may be periodically removed from the core 20 and turned over, thereby increasing its service life.
  • the leaf spring 22 is fabricated from a spring steel such as a stainless steel spring steel. However, it is to be understood that other resilient materials may be utilized.
  • FIG. 6 depicts a top plan view of one specific configuration of leaf spring which may be employed to fabricate the roller. In this instance, the spring material is 0.030 inch thick spring steel.
  • the leaf spring members 22 are affixed to the core 20 by screws 24 .
  • the screws are disposed proximate the ends of each of the leaf springs. By so positioning the screws, a central portion of the roller is free to receive and retain a web of material thereupon.
  • the springs may be attached to the core so as to permit relative motion thereto.
  • the springs may include slots which receive the screws.
  • the springs may be affixed to the core by shoulder screws having a shoulder which is slightly smaller than the opening in the spring and slightly thicker than the thickness of the spring.
  • the screw may be tightly seated onto the core, and the shoulder will “stand off” the remainder of the screw head so as to provide clearance that will accommodate movement of the spring.
  • Other such arrangements will be apparent to those of skill in the art.
  • Various other methods of affixation may also be employed.
  • the spring strips may be welded or brazed onto the core, and such affixation may be along the entire length of the spring, or at one or more selected locations, such as the ends.
  • FIG. 7 shows a portion of another configuration of roller which includes a core 20 as previously described having leaf spring members 26 affixed to the core 20 by screws 24 .
  • the roller of the FIG. 7 embodiment includes leaf springs 26 which are affixed proximate one edge thereof so that the other edge is spaced from the core 20 .
  • FIG. 7 only one side of the springs 26 has a tapered edge; however, two-sided, dual tapers as shown in FIG. 5 may also be used in this embodiment.
  • FIG. 8 shows yet another embodiment in which a curved leaf spring 28 having generally rounded edges is affixed to a core 20 . Yet other embodiments will be apparent to those of skill in the art.
  • FIG. 9 shows a roller 30 which is comprised of a plurality of segments, for example segment 32 , which cooperate to define a generally cylindrical roller surface. These segments are joined to one another by springs 34 . The presence of the springs 34 allows for the cylindrical surface of the roller 30 to be compressed and displaced.
  • the number of segments 32 may be increased or decreased in number.
  • the springs may be replaced by other biasing members such as elastic bodies, pneumatic or hydraulic devices, or the like.
  • rollers with displaceable surfaces may be utilized to practice the disclosed method. It is notable that the present invention provides for the fabrication of rollers with radially displaceable surfaces from high temperature tolerant materials such as metals or ceramics. In some specific instances, rollers in accord with this invention are fabricated entirely from metals and/or ceramics.
  • substrates for ultra light photovoltaic devices and other such semiconductor devices are prepared by a process wherein a substrate comprised of a polyimide material, such as the material sold under the designation Kapton®, is laminated onto a stainless steel or other ferrous support member.
  • the polyimide typically has a thickness in the range of 0.5-2 mils, and in one specific instance has a thickness of approximately 1 mil.
  • the polyimide material is provided with a coating of a fluoropolymer based hot melt adhesive having a thickness of approximately 0.2 mils.
  • the support member is a body of 5 mil thick stainless steel, and in particular instances, the stainless steel is coated with a zinc oxide layer of approximately 500 nanometers thickness.
  • This layer will, in the lamination process, be transferred to the polyimide substrate and function to prevent layer curl.
  • a layer of metal such as titanium having a thickness of approximately 50 nanometers is disposed upon the stainless steel, beneath the zinc oxide layer.
  • This titanium layer functions to prevent etching of the zinc oxide when the stainless steel layer is subsequently etched away from the polyimide. As such, it is referred to as an etch-stop layer.
  • the stainless steel support and polyimide substrate are wound onto the roller under tension, in an interleaved relationship as depicted in FIG. 2 .
  • the wound roll is disposed in a vacuum chamber and maintained at a pressure in the general range of 1-50 millitorr. In a specific instance the chamber is maintained at a pressure of approximately 10 millitorr under a flow of nitrogen. Heating may be accomplished by the use of a conventional vacuum oven; however in one specific embodiment, heating is accomplished by disposing a radiant heater within the core of the roller and disposing a heater blanket about the outside of the rolled material. Other heating arrangements may also be utilized.
  • the roll is raised to a temperature of 350° C. over a period of 24 hours then maintained at 350° C.
  • the substrate thus produced has a very uniform and level surface and is very suitable for the deposition of high-quality thin film electronic devices thereupon.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Crushing And Grinding (AREA)
US12/017,180 2007-01-25 2008-01-21 Lamination process and roller for use therein Expired - Fee Related US7947149B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US12/017,180 US7947149B2 (en) 2007-01-25 2008-01-21 Lamination process and roller for use therein
PCT/US2008/051793 WO2008091945A1 (en) 2007-01-25 2008-01-23 Lamination process and roller for use therein
EP08728132A EP2121286B1 (de) 2007-01-25 2008-01-23 Laminierungsverfahren und rolle zur verwendung darin
KR1020097017595A KR20090108095A (ko) 2007-01-25 2008-01-23 적층 공정 및 이에 사용하기 위한 롤러
AT08728132T ATE548177T1 (de) 2007-01-25 2008-01-23 Laminierungsverfahren und rolle zur verwendung darin
CN2008800048910A CN101646549B (zh) 2007-01-25 2008-01-23 层压过程以及用于其中的辊

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88651707P 2007-01-25 2007-01-25
US12/017,180 US7947149B2 (en) 2007-01-25 2008-01-21 Lamination process and roller for use therein

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US20080179001A1 US20080179001A1 (en) 2008-07-31
US7947149B2 true US7947149B2 (en) 2011-05-24

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US (1) US7947149B2 (de)
EP (1) EP2121286B1 (de)
KR (1) KR20090108095A (de)
CN (1) CN101646549B (de)
AT (1) ATE548177T1 (de)
WO (1) WO2008091945A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140335986A1 (en) * 2013-05-07 2014-11-13 Shimano Inc. Bicycle sprocket
US12312197B2 (en) 2019-12-11 2025-05-27 Dyson Technology Limited Method of preparing sheet material for dividing into discrete stacks

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US5257965A (en) 1989-05-12 1993-11-02 Cerasiv Gmbh Innovatives Keramik-Engineering Roller for pressure treatment of webs
US5273608A (en) * 1990-11-29 1993-12-28 United Solar Systems Corporation Method of encapsulating a photovoltaic device
US5906567A (en) 1994-10-31 1999-05-25 Vesuvius France S.A. Roller assembly for the transportation of articles at high temperatures
US6087580A (en) 1996-12-12 2000-07-11 Energy Conversion Devices, Inc. Semiconductor having large volume fraction of intermediate range order material
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EP2121286A1 (de) 2009-11-25
ATE548177T1 (de) 2012-03-15
CN101646549B (zh) 2012-07-18
US20080179001A1 (en) 2008-07-31
EP2121286A4 (de) 2011-01-12
WO2008091945A1 (en) 2008-07-31
CN101646549A (zh) 2010-02-10
EP2121286B1 (de) 2012-03-07

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